Pakistan Air Force jets have hit suspected Taliban hideouts in the north-western tribal region, killing at least 37 people and injuring 18.
The insurgents were attacked in Khyber, which borders Afghanistan, on intelligence that rebels involved in recent bombings were present, a military official said on Thursday, on the condition of anonymity.
The casualties could not be verified through independent sources because the area is remote and too dangerous for the media.
It was the first airstrike since a 40-day ceasefire with the Taliban ended April 10.
Violence has broken out again after the Taliban refused to extend the truce.
A policeman known for opposing the Taliban was the target of a suicide bombing Thursday that killed him and at least two civilians in the restive southern port city of Karachi, police officer Farooq Awan said.
“About two kilograms of explosives were used by the bomber,” Awan said.
Another police officer said three people were injured in the attack.
No one took responsibility for the bombing, which came a day after government and Taliban representatives met in Islamabad to revive the stalled peace process.